Combined level and square



' D. J. TOUSSAINT COMBINED LEVEL AND SQUARE Filed Apl 14 1923 2 Sheets-Sheet 2 WITNESS: ATTORNEY Patented Feb. 24, 1925.

UNITED STATES DANIEL J'. TOUSSANT, OF EAST ST. LOUIS, ILLINOIS.

COMBINED LEVEL AND SQUARE.

Application filed April 14:, 1923. Serial No. 632,142.

T 0 all whom# may concern.'

Be it known that I, DANIELJ. TOUSSAINT, a citizen of the United States, residing at East Saint Louis, in the county of Saint Clair and State of Illinois, have invented new and useful Improvements in Combined Level and Square, of which the following is a specification.

This invention relates to measuring instruments and has for its object the provision of a novel device which is capable of use as a square, bevel square or the like.

An important and more specific object is the provision of an instrument of this character which includes a pivotally mounted blade or tongue which may be adjusted and held at any desired position and which is provided with means for ascertaining the exact angle of inclination of the blade or tongue with respectto the handle.

An additional object is the provision of a device of this character which will be simple and inexpensive in manufacture, highly eiiicient in use, durable in service and a general improvement in the art.

With the above and other objects and advantages in view the invention consists in the details of construction to be hereinafter more fully described and claimed and illustrated in the accompanying drawings, in which:

Figure 'l is a plan view of the device,

Figure 2 is a side elevation thereof,

Figure 8 is a horizontal section,

Figure 4 is a cross section on the line 1 -4 of Figure 1,

Figure 5 is a section taken longitudinally of the device.

Referring to the drawings the numeral 10 designates the handle or relatively stationn ary portion of the device which is elongated and preferably rectangular in cross section. This handle or body may be constructed of any desired material. Aluminum is very suitable on account of its strength and lightness and to economize in material and to further reduce the weight, this elongated body or handle is formed with openings or cut out portions 11. At a point spaced from one end the body is formed with a circular hole 12 and at opposite `sides is counterbored to define larger holes 13 which are likewise circular in shape. These holes or openings are provided for the purpose of permitting the installation of any suitable level indicator, not shown in detail. At one end the body is formed with a slot or slit 111 and at opposite sides of the slot the body is formed with concentric arcuate slots 16 and 1 7 which are concentric with the shoulder 18 at one end of a face plate 1S secured on one edge of the handle.

Secured upon opposite sides of this end of the body are dial plates 19 which are similar and which are formed with slots 2O and 21 registering with the slots 16 and 17 respectively. This dial plate is provided with protractor indications including radial lines 22 spaced a distance apart equal to any desired number of degrees as for instance 10 degrees, though this is arbitrary'. At the outer ends of these radial lines it is preferable that the dial plates be inscribed with figures indicating degrees.

Associated with this handle is an elongated blade or tongue 23 graduated in inches and fractions thereof so as to be capable of use in making measurements, and this blade extends into the slot 14e with one edge en-` gaging the shoulder 18 whereby this shoulder will serve as a fulcrum. At the end within the slot the blade is formed with a late al extension QA and this end is formed with a lateral elongated slot 25 which registers to a certain extent with the curved slots 17 and 21. Passing through these registerd ing slots is a bolt 26 carrying a wing or thumb nut 27 which when tightened will hold the blade 23 rigidly at any desired adjusted angular position.

In the operation of the device it will be seen that by loosening the nut 27 the blade o3 may be swung with respect to the body 10 in to any desired angular position, the exact degree being determined by registra` tion of the edge 28 of the tongue or blade with one of the radial lines Q2. By tighten ing the nut 27 the adjustment is maintained. Owing to the provision of the elongated slot 25, it is appa-rent that some portion of this slot will register with the slot 17 regardless of the position of the blade and the provision of the extension 24 permits the blade to be moved so as to lie against the edge of the handle in an entirely folded position.

'ifVhile l have shown and described the preferred embodiment of the invention it is of course to be understood that 1 reserve the right to make such changes in the form,

construction and arrangement ot parts as will not departv 'trein the spirit or' the invention or the scope of the subjoined claims.

I claim:

l. In a device of the character described, an elongated handle formed at one end with a longitudinally extending recess, there being coinciding arcuate slots in the walls of said recess extending from side to side of said handle and having their coinmon center in one edge thereof, a plate secured to said edge and extending over said recess to the center line of said arcuate slots, an elongated blade having a transverse slot in one end, said end being disposable within said recess whereby all three slots are in alineinent, and a clamping bolt passing through said slots whereby said blade may be turned about the edge of said plate as a fulcruin and clamped in relation to saidl handle by means of the clamping bolt.

2. In a device ol the character described, an elongated handle formed at one end with a longitudinally extending recess, there being coinciding arcuate slots in the walls of said recess, extending from side to side of said handle and having their common center in one edge thereof, a` pla-te secured to said edge and extending over said recess to the center line of said arcuate slot-s, an elongated blade having an extension at one end provided with a transverse slot, said end being disposable within said recess whereby all three slots are` in alinement, and a clainping bolt passing through said slots whereby said blade may be turned about the edge of said plate as a fulcruin and clamped in rela-m tion to said handle by means of the clamp ing bolt, and said plate having an opening i'or the reception ot' said extension whereby the blade may be disposedA with one edge lying fiat against said plate.A

In testimony whereof I aiix my signa ture.

DANIEL J. TOUSSAINT. 

